Trolley-pole for conducting electric current to vehicles.



No. 856,535. PATENTED JUNE 11, 1907, R. & J. LINDSAY. TROLLEY POLE FORCONDUCTING ELECTRIC CURRENT T0 VEHICLES.

APPLICATION FILED JUNE 26 1905.

m I F W 7MP Marvels PETERS cm. WASHINGYON. n. c

UNITED STATES PATENT OFFICE.

ROBERT LINDSAY AND JOHN LINDSAY, OFDUNEDIN, NETV ZEALAND.

TROLLEY-POLE FOR CONDUCTING ELECTRIC CURRENT T VEHICLES.

Specification of Letters Patent.

Patented June 11, 1907.

Application filed June 26,1905. Serial No. 267,159.

To aZZ whom it may concern.-

Be it known that we, JOHN LINDSAY and ROBERT LINDSAY, subjects of HisMajesty the King of Great Britain and Ireland, residing at Dunedin, inthe Provincial District of Otago, in the Colony of New Zealand,carpenter and engine-driver, respectively, have invented certain new anduseful Improvements in Trolley-Poles for Conducting Electric Current toVehicles, of which the following is a specification.

This invention relates to trolley poles used upon vehicles forconducting electric current from an overhead wire to the motor upon thecar and consists in improvements whereby the trolley pole may be easilyreversed when the direction of the car is changed.

According to this invention the trolley pole is pivoted at its base to abracket in any ordinary manner and provided with springs and connectingparts which tend to keep the trolley pole in a vertical position. Thepole is divided into two parts, the bottom part or inner tubetelescoping into the upper part or outer casing. A spring is introducedbetween two collars one secured to each of the said outer casing andinner tube. The outer casing or upper part of the pole is thus free toslide upon the inner tube. when the spring is compressed. At the upperend of the trolley pole are provided two eyes one on each side of thepole. A rope has one of its ends attached to one of the eyes and passesdown to a pulley sheave fixed upon the front of the car then uponrollers along the roof to a pulley sheave at the other end of the car,and is then returned and has its other end attached to the other eye ofthe trolley pole. The rope is thus always ready for the conductor tooperate the trolley pole without getting off the car. When the trolleypole is reversed the outer casing telescopes upon the inner tube, thespring compressing to allow of this movement.

The drawing illustrates the invention Figure 1 is a side elevation of acar fitted with our invention. Fig. 2 is a side sectional elevation.Fig. 3 a front elevation of the trolley pole and its bracket. Fig. 4 isa section on line AA, Fig. 3, and Fig. 5 is a sectional elevationthrough the trolley wheel and its jaw.

The trolley pole is divided into two parts, the bottom part or innertube 1 telescoping into the upper part or outer casing 2. A collar 3 issecured upon the inner tube 1 by rivets 4 and another collar 5 issecured upon the inside of the outer casing 2 by rivets 6. The upper endof the inner tube 1 is reduced in diameter to pass through the collar 5and provide an annular space 7 for a spring 8 which is introducedbetween the collars 3 and 5. A socket 9 is screwed upon the bottom endof the outer casing 2 for which it forms a guide by sliding upon theinner tube 1. A cap 10 is screwed to the top of the outer casing andcarries the head piece 11 which has the usual jaw 12 and trolley wheel13. The inner tube 1 is pivoted upon a pin 14 in a bracket 15 attachedto the car.

The pole is kept upright in any ordinary manner but preferably bysprings 16 and 17 which are mounted upon bolts 18 and 19 pivoted to thepole in jaws 20 and 21 by pins 22 and 23. The springs are in compressionbetween washers 24 and 25 and the ends of the bracket 15 and the tensionof the springs is adjusted by means of nuts 26 and 27'. A bar 28 adaptedto work in a slot 29 provided in the outer casing 2 passes through thetop of the inner tube 1 and is secured thereto by a bolt 30. Holes 31and 32 are provided in the ends of the bar 28 and a rope 33 has one endfixed in the hole 31, passes down to a pulley 3 L fixed upon the frontof the car and is carried over the roof of the car upon rollers orpulleys 35, around a pulley 36 at the rear end of the car and thenceupward to the hole 32.

The head piece 11 is made solid and is provided with contact pieces 37and 38 inside the jaw 12 in which the trolley wheel 13 revolves. Thecontact pieces are secured to the jaw by rivets 39 and 40 and have holesthrough which the pin 11 of the trolley Wheel passes.

To reverse the pole the conductor goes to the front of the car and pullsthe rope which causes the trolley wheel to run along the trolley wire,the weight of the trolley Wire and outer casing compressing the springso that the trolley wheel does not leave the wire.

What I do claim and desire to secure by Letters Patent of the UnitedStates is In apparatus for the purpose indicated in combination, atrolley pole pivoted in a bracket upon the top of a car, and having anouter casing telescoping upon an inner tube, a spring supporting theouter casing upon the inner tube, a bar secured to the top of the innertube and having holes, a rope attached at one end to one end of the bar,a pulley sheave upon the front of the car around which the rope passes,pulleys upon the top of the car names to this specification in thepresence of over which the rope passes, a pulley sheave two Witnesses.upon the rear of the car around Which the ROBERT LINDSAY. rope passes,the rope having its other end at- I JOHN LINDSAY. 5 tached to the otherend of the bar, substan- Witnesses: l tially as specified. D. W;MAGKISACK,

In testimony whereof We have signed our SAMUEL PHILIP MIRAMS.

